28405260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1$

素因数の和:288

約数の個数: 144

約数和(自身を含む): 94785600

約数和(自身を除く): 66380340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 61, 65, 78, 90, 117, 122, 130, 156, 180, 183, 195, 199, 234, 244, 260, 305, 366, 390, 398, 468, 549, 585, 597, 610, 732, 780, 793, 796, 915, 995, 1098, 1170, 1194, 1220, 1586, 1791, 1830, 1990, 2196, 2340, 2379, 2388, 2587, 2745, 2985, 3172, 3582, 3660, 3965, 3980, 4758, 5174, 5490, 5970, 7137, 7164, 7761, 7930, 8955, 9516, 10348, 10980, 11895, 11940, 12139, 12935, 14274, 15522, 15860, 17910, 23283, 23790, 24278, 25870, 28548, 31044, 35685, 35820, 36417, 38805, 46566, 47580, 48556, 51740, 60695, 71370, 72834, 77610, 93132, 109251, 116415, 121390, 142740, 145668, 155220, 157807, 182085, 218502, 232830, 242780, 315614, 364170, 437004, 465660, 473421, 546255, 631228, 728340, 789035, 946842, 1092510, 1420263, 1578070, 1893684, 2185020, 2367105, 2840526, 3156140, 4734210, 5681052, 7101315, 9468420, 14202630, 28405260]

約数ペア:

[(1, 28405260), (2, 14202630), (3, 9468420), (4, 7101315), (5, 5681052), (6, 4734210), (9, 3156140), (10, 2840526), (12, 2367105), (13, 2185020), (15, 1893684), (18, 1578070), (20, 1420263), (26, 1092510), (30, 946842), (36, 789035), (39, 728340), (45, 631228), (52, 546255), (60, 473421), (61, 465660), (65, 437004), (78, 364170), (90, 315614), (117, 242780), (122, 232830), (130, 218502), (156, 182085), (180, 157807), (183, 155220), (195, 145668), (199, 142740), (234, 121390), (244, 116415), (260, 109251), (305, 93132), (366, 77610), (390, 72834), (398, 71370), (468, 60695), (549, 51740), (585, 48556), (597, 47580), (610, 46566), (732, 38805), (780, 36417), (793, 35820), (796, 35685), (915, 31044), (995, 28548), (1098, 25870), (1170, 24278), (1194, 23790), (1220, 23283), (1586, 17910), (1791, 15860), (1830, 15522), (1990, 14274), (2196, 12935), (2340, 12139), (2379, 11940), (2388, 11895), (2587, 10980), (2745, 10348), (2985, 9516), (3172, 8955), (3582, 7930), (3660, 7761), (3965, 7164), (3980, 7137), (4758, 5970), (5174, 5490)]