81105920

素因数分解:

$2^{10}\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1$

素因数の和:136

約数の個数: 176

約数和(自身を含む): 232670208

約数和(自身を除く): 151564288

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 56, 62, 64, 70, 73, 80, 112, 124, 128, 140, 146, 155, 160, 217, 224, 248, 256, 280, 292, 310, 320, 365, 434, 448, 496, 511, 512, 560, 584, 620, 640, 730, 868, 896, 992, 1022, 1024, 1085, 1120, 1168, 1240, 1280, 1460, 1736, 1792, 1984, 2044, 2170, 2240, 2263, 2336, 2480, 2555, 2560, 2920, 3472, 3584, 3968, 4088, 4340, 4480, 4526, 4672, 4960, 5110, 5120, 5840, 6944, 7168, 7936, 8176, 8680, 8960, 9052, 9344, 9920, 10220, 11315, 11680, 13888, 15841, 15872, 16352, 17360, 17920, 18104, 18688, 19840, 20440, 22630, 23360, 27776, 31682, 31744, 32704, 34720, 35840, 36208, 37376, 39680, 40880, 45260, 46720, 55552, 63364, 65408, 69440, 72416, 74752, 79205, 79360, 81760, 90520, 93440, 111104, 126728, 130816, 138880, 144832, 158410, 158720, 163520, 181040, 186880, 222208, 253456, 261632, 277760, 289664, 316820, 327040, 362080, 373760, 506912, 523264, 555520, 579328, 633640, 654080, 724160, 1013824, 1111040, 1158656, 1267280, 1308160, 1448320, 2027648, 2317312, 2534560, 2616320, 2896640, 4055296, 5069120, 5793280, 8110592, 10138240, 11586560, 16221184, 20276480, 40552960, 81105920]

約数ペア:

[(1, 81105920), (2, 40552960), (4, 20276480), (5, 16221184), (7, 11586560), (8, 10138240), (10, 8110592), (14, 5793280), (16, 5069120), (20, 4055296), (28, 2896640), (31, 2616320), (32, 2534560), (35, 2317312), (40, 2027648), (56, 1448320), (62, 1308160), (64, 1267280), (70, 1158656), (73, 1111040), (80, 1013824), (112, 724160), (124, 654080), (128, 633640), (140, 579328), (146, 555520), (155, 523264), (160, 506912), (217, 373760), (224, 362080), (248, 327040), (256, 316820), (280, 289664), (292, 277760), (310, 261632), (320, 253456), (365, 222208), (434, 186880), (448, 181040), (496, 163520), (511, 158720), (512, 158410), (560, 144832), (584, 138880), (620, 130816), (640, 126728), (730, 111104), (868, 93440), (896, 90520), (992, 81760), (1022, 79360), (1024, 79205), (1085, 74752), (1120, 72416), (1168, 69440), (1240, 65408), (1280, 63364), (1460, 55552), (1736, 46720), (1792, 45260), (1984, 40880), (2044, 39680), (2170, 37376), (2240, 36208), (2263, 35840), (2336, 34720), (2480, 32704), (2555, 31744), (2560, 31682), (2920, 27776), (3472, 23360), (3584, 22630), (3968, 20440), (4088, 19840), (4340, 18688), (4480, 18104), (4526, 17920), (4672, 17360), (4960, 16352), (5110, 15872), (5120, 15841), (5840, 13888), (6944, 11680), (7168, 11315), (7936, 10220), (8176, 9920), (8680, 9344), (8960, 9052)]