21901100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{991}}^1$

素因数の和:1035

約数の個数: 72

約数和(自身を含む): 54246528

約数和(自身を除く): 32345428

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 25, 26, 34, 50, 52, 65, 68, 85, 100, 130, 170, 221, 260, 325, 340, 425, 442, 650, 850, 884, 991, 1105, 1300, 1700, 1982, 2210, 3964, 4420, 4955, 5525, 9910, 11050, 12883, 16847, 19820, 22100, 24775, 25766, 33694, 49550, 51532, 64415, 67388, 84235, 99100, 128830, 168470, 219011, 257660, 322075, 336940, 421175, 438022, 644150, 842350, 876044, 1095055, 1288300, 1684700, 2190110, 4380220, 5475275, 10950550, 21901100]

約数ペア:

[(1, 21901100), (2, 10950550), (4, 5475275), (5, 4380220), (10, 2190110), (13, 1684700), (17, 1288300), (20, 1095055), (25, 876044), (26, 842350), (34, 644150), (50, 438022), (52, 421175), (65, 336940), (68, 322075), (85, 257660), (100, 219011), (130, 168470), (170, 128830), (221, 99100), (260, 84235), (325, 67388), (340, 64415), (425, 51532), (442, 49550), (650, 33694), (850, 25766), (884, 24775), (991, 22100), (1105, 19820), (1300, 16847), (1700, 12883), (1982, 11050), (2210, 9910), (3964, 5525), (4420, 4955)]