278519190

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{449}}^1$

素因数の和:542

約数の個数: 128

約数和(自身を含む): 746496000

約数和(自身を除く): 467976810

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 29, 30, 31, 46, 58, 62, 69, 87, 93, 115, 138, 145, 155, 174, 186, 230, 290, 310, 345, 435, 449, 465, 667, 690, 713, 870, 898, 899, 930, 1334, 1347, 1426, 1798, 2001, 2139, 2245, 2694, 2697, 3335, 3565, 4002, 4278, 4490, 4495, 5394, 6670, 6735, 7130, 8990, 10005, 10327, 10695, 13021, 13470, 13485, 13919, 20010, 20654, 20677, 21390, 26042, 26970, 27838, 30981, 39063, 41354, 41757, 51635, 61962, 62031, 65105, 69595, 78126, 83514, 103270, 103385, 124062, 130210, 139190, 154905, 195315, 206770, 208785, 299483, 309810, 310155, 320137, 390630, 403651, 417570, 598966, 620310, 640274, 807302, 898449, 960411, 1210953, 1497415, 1600685, 1796898, 1920822, 2018255, 2421906, 2994830, 3201370, 4036510, 4492245, 4802055, 6054765, 8984490, 9283973, 9604110, 12109530, 18567946, 27851919, 46419865, 55703838, 92839730, 139259595, 278519190]

約数ペア:

[(1, 278519190), (2, 139259595), (3, 92839730), (5, 55703838), (6, 46419865), (10, 27851919), (15, 18567946), (23, 12109530), (29, 9604110), (30, 9283973), (31, 8984490), (46, 6054765), (58, 4802055), (62, 4492245), (69, 4036510), (87, 3201370), (93, 2994830), (115, 2421906), (138, 2018255), (145, 1920822), (155, 1796898), (174, 1600685), (186, 1497415), (230, 1210953), (290, 960411), (310, 898449), (345, 807302), (435, 640274), (449, 620310), (465, 598966), (667, 417570), (690, 403651), (713, 390630), (870, 320137), (898, 310155), (899, 309810), (930, 299483), (1334, 208785), (1347, 206770), (1426, 195315), (1798, 154905), (2001, 139190), (2139, 130210), (2245, 124062), (2694, 103385), (2697, 103270), (3335, 83514), (3565, 78126), (4002, 69595), (4278, 65105), (4490, 62031), (4495, 61962), (5394, 51635), (6670, 41757), (6735, 41354), (7130, 39063), (8990, 30981), (10005, 27838), (10327, 26970), (10695, 26042), (13021, 21390), (13470, 20677), (13485, 20654), (13919, 20010)]