640341720

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{34877}}^1$

素因数の和:34914

約数の個数: 128

約数和(自身を含む): 2260094400

約数和(自身を除く): 1619752680

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 17, 18, 20, 24, 27, 30, 34, 36, 40, 45, 51, 54, 60, 68, 72, 85, 90, 102, 108, 120, 135, 136, 153, 170, 180, 204, 216, 255, 270, 306, 340, 360, 408, 459, 510, 540, 612, 680, 765, 918, 1020, 1080, 1224, 1530, 1836, 2040, 2295, 3060, 3672, 4590, 6120, 9180, 18360, 34877, 69754, 104631, 139508, 174385, 209262, 279016, 313893, 348770, 418524, 523155, 592909, 627786, 697540, 837048, 941679, 1046310, 1185818, 1255572, 1395080, 1569465, 1778727, 1883358, 2092620, 2371636, 2511144, 2964545, 3138930, 3557454, 3766716, 4185240, 4708395, 4743272, 5336181, 5929090, 6277860, 7114908, 7533432, 8893635, 9416790, 10672362, 11858180, 12555720, 14229816, 16008543, 17787270, 18833580, 21344724, 23716360, 26680905, 32017086, 35574540, 37667160, 42689448, 53361810, 64034172, 71149080, 80042715, 106723620, 128068344, 160085430, 213447240, 320170860, 640341720]

約数ペア:

[(1, 640341720), (2, 320170860), (3, 213447240), (4, 160085430), (5, 128068344), (6, 106723620), (8, 80042715), (9, 71149080), (10, 64034172), (12, 53361810), (15, 42689448), (17, 37667160), (18, 35574540), (20, 32017086), (24, 26680905), (27, 23716360), (30, 21344724), (34, 18833580), (36, 17787270), (40, 16008543), (45, 14229816), (51, 12555720), (54, 11858180), (60, 10672362), (68, 9416790), (72, 8893635), (85, 7533432), (90, 7114908), (102, 6277860), (108, 5929090), (120, 5336181), (135, 4743272), (136, 4708395), (153, 4185240), (170, 3766716), (180, 3557454), (204, 3138930), (216, 2964545), (255, 2511144), (270, 2371636), (306, 2092620), (340, 1883358), (360, 1778727), (408, 1569465), (459, 1395080), (510, 1255572), (540, 1185818), (612, 1046310), (680, 941679), (765, 837048), (918, 697540), (1020, 627786), (1080, 592909), (1224, 523155), (1530, 418524), (1836, 348770), (2040, 313893), (2295, 279016), (3060, 209262), (3672, 174385), (4590, 139508), (6120, 104631), (9180, 69754), (18360, 34877)]