66501820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:264

約数の個数: 144

約数和(自身を含む): 183859200

約数和(自身を除く): 117357380

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 31, 35, 44, 49, 55, 62, 70, 77, 98, 110, 124, 140, 154, 155, 196, 199, 217, 220, 245, 308, 310, 341, 385, 398, 434, 490, 539, 620, 682, 770, 796, 868, 980, 995, 1078, 1085, 1364, 1393, 1519, 1540, 1705, 1990, 2156, 2170, 2189, 2387, 2695, 2786, 3038, 3410, 3980, 4340, 4378, 4774, 5390, 5572, 6076, 6169, 6820, 6965, 7595, 8756, 9548, 9751, 10780, 10945, 11935, 12338, 13930, 15190, 15323, 16709, 19502, 21890, 23870, 24676, 27860, 30380, 30646, 30845, 33418, 39004, 43183, 43780, 47740, 48755, 61292, 61690, 66836, 67859, 76615, 83545, 86366, 97510, 107261, 123380, 135718, 153230, 167090, 172732, 195020, 214522, 215915, 271436, 302281, 306460, 334180, 339295, 429044, 431830, 475013, 536305, 604562, 678590, 863660, 950026, 1072610, 1209124, 1357180, 1511405, 1900052, 2145220, 2375065, 3022810, 3325091, 4750130, 6045620, 6650182, 9500260, 13300364, 16625455, 33250910, 66501820]

約数ペア:

[(1, 66501820), (2, 33250910), (4, 16625455), (5, 13300364), (7, 9500260), (10, 6650182), (11, 6045620), (14, 4750130), (20, 3325091), (22, 3022810), (28, 2375065), (31, 2145220), (35, 1900052), (44, 1511405), (49, 1357180), (55, 1209124), (62, 1072610), (70, 950026), (77, 863660), (98, 678590), (110, 604562), (124, 536305), (140, 475013), (154, 431830), (155, 429044), (196, 339295), (199, 334180), (217, 306460), (220, 302281), (245, 271436), (308, 215915), (310, 214522), (341, 195020), (385, 172732), (398, 167090), (434, 153230), (490, 135718), (539, 123380), (620, 107261), (682, 97510), (770, 86366), (796, 83545), (868, 76615), (980, 67859), (995, 66836), (1078, 61690), (1085, 61292), (1364, 48755), (1393, 47740), (1519, 43780), (1540, 43183), (1705, 39004), (1990, 33418), (2156, 30845), (2170, 30646), (2189, 30380), (2387, 27860), (2695, 24676), (2786, 23870), (3038, 21890), (3410, 19502), (3980, 16709), (4340, 15323), (4378, 15190), (4774, 13930), (5390, 12338), (5572, 11935), (6076, 10945), (6169, 10780), (6820, 9751), (6965, 9548), (7595, 8756)]