81540420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{977}}^1$

素因数の和:1109

約数の個数: 96

約数和(自身を含む): 248427648

約数和(自身を除く): 166887228

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 107, 130, 156, 195, 214, 260, 321, 390, 428, 535, 642, 780, 977, 1070, 1284, 1391, 1605, 1954, 2140, 2782, 2931, 3210, 3908, 4173, 4885, 5564, 5862, 6420, 6955, 8346, 9770, 11724, 12701, 13910, 14655, 16692, 19540, 20865, 25402, 27820, 29310, 38103, 41730, 50804, 58620, 63505, 76206, 83460, 104539, 127010, 152412, 190515, 209078, 254020, 313617, 381030, 418156, 522695, 627234, 762060, 1045390, 1254468, 1359007, 1568085, 2090780, 2718014, 3136170, 4077021, 5436028, 6272340, 6795035, 8154042, 13590070, 16308084, 20385105, 27180140, 40770210, 81540420]

約数ペア:

[(1, 81540420), (2, 40770210), (3, 27180140), (4, 20385105), (5, 16308084), (6, 13590070), (10, 8154042), (12, 6795035), (13, 6272340), (15, 5436028), (20, 4077021), (26, 3136170), (30, 2718014), (39, 2090780), (52, 1568085), (60, 1359007), (65, 1254468), (78, 1045390), (107, 762060), (130, 627234), (156, 522695), (195, 418156), (214, 381030), (260, 313617), (321, 254020), (390, 209078), (428, 190515), (535, 152412), (642, 127010), (780, 104539), (977, 83460), (1070, 76206), (1284, 63505), (1391, 58620), (1605, 50804), (1954, 41730), (2140, 38103), (2782, 29310), (2931, 27820), (3210, 25402), (3908, 20865), (4173, 19540), (4885, 16692), (5564, 14655), (5862, 13910), (6420, 12701), (6955, 11724), (8346, 9770)]