404894720

素因数分解:

$2^{10}\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2551}}^1$

素因数の和:2607

約数の個数: 88

約数和(自身を含む): 1002997248

約数和(自身を除く): 598102528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 512, 620, 640, 992, 1024, 1240, 1280, 1984, 2480, 2551, 2560, 3968, 4960, 5102, 5120, 7936, 9920, 10204, 12755, 15872, 19840, 20408, 25510, 31744, 39680, 40816, 51020, 79081, 79360, 81632, 102040, 158162, 158720, 163264, 204080, 316324, 326528, 395405, 408160, 632648, 653056, 790810, 816320, 1265296, 1306112, 1581620, 1632640, 2530592, 2612224, 3163240, 3265280, 5061184, 6326480, 6530560, 10122368, 12652960, 13061120, 20244736, 25305920, 40489472, 50611840, 80978944, 101223680, 202447360, 404894720]

約数ペア:

[(1, 404894720), (2, 202447360), (4, 101223680), (5, 80978944), (8, 50611840), (10, 40489472), (16, 25305920), (20, 20244736), (31, 13061120), (32, 12652960), (40, 10122368), (62, 6530560), (64, 6326480), (80, 5061184), (124, 3265280), (128, 3163240), (155, 2612224), (160, 2530592), (248, 1632640), (256, 1581620), (310, 1306112), (320, 1265296), (496, 816320), (512, 790810), (620, 653056), (640, 632648), (992, 408160), (1024, 395405), (1240, 326528), (1280, 316324), (1984, 204080), (2480, 163264), (2551, 158720), (2560, 158162), (3968, 102040), (4960, 81632), (5102, 79360), (5120, 79081), (7936, 51020), (9920, 40816), (10204, 39680), (12755, 31744), (15872, 25510), (19840, 20408)]