21786304

素因数分解:

$2^6\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1$

素因数の和:261

約数の個数: 56

約数和(自身を含む): 45516800

約数和(自身を除く): 23730496

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 79, 124, 139, 158, 248, 278, 316, 496, 556, 632, 992, 1112, 1264, 1984, 2224, 2449, 2528, 4309, 4448, 4898, 5056, 8618, 8896, 9796, 10981, 17236, 19592, 21962, 34472, 39184, 43924, 68944, 78368, 87848, 137888, 156736, 175696, 275776, 340411, 351392, 680822, 702784, 1361644, 2723288, 5446576, 10893152, 21786304]

約数ペア:

[(1, 21786304), (2, 10893152), (4, 5446576), (8, 2723288), (16, 1361644), (31, 702784), (32, 680822), (62, 351392), (64, 340411), (79, 275776), (124, 175696), (139, 156736), (158, 137888), (248, 87848), (278, 78368), (316, 68944), (496, 43924), (556, 39184), (632, 34472), (992, 21962), (1112, 19592), (1264, 17236), (1984, 10981), (2224, 9796), (2449, 8896), (2528, 8618), (4309, 5056), (4448, 4898)]