20276480

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1$

素因数の和:132

約数の個数: 144

約数和(自身を含む): 58082304

約数和(自身を除く): 37805824

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, 560, 584, 620, 640, 730, 868, 896, 992, 1022, 1085, 1120, 1168, 1240, 1280, 1460, 1736, 1792, 1984, 2044, 2170, 2240, 2263, 2336, 2480, 2555, 2920, 3472, 3968, 4088, 4340, 4480, 4526, 4672, 4960, 5110, 5840, 6944, 7936, 8176, 8680, 8960, 9052, 9344, 9920, 10220, 11315, 11680, 13888, 15841, 16352, 17360, 18104, 18688, 19840, 20440, 22630, 23360, 27776, 31682, 32704, 34720, 36208, 39680, 40880, 45260, 46720, 55552, 63364, 65408, 69440, 72416, 79205, 81760, 90520, 93440, 126728, 130816, 138880, 144832, 158410, 163520, 181040, 253456, 277760, 289664, 316820, 327040, 362080, 506912, 579328, 633640, 654080, 724160, 1013824, 1267280, 1448320, 2027648, 2534560, 2896640, 4055296, 5069120, 10138240, 20276480]

約数ペア:

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