21187530

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{199}}^1$

素因数の和:245

約数の個数: 144

約数和(自身を含む): 68515200

約数和(自身を除く): 47327670

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 13, 14, 15, 18, 21, 26, 30, 35, 39, 42, 45, 63, 65, 70, 78, 90, 91, 105, 117, 126, 130, 169, 182, 195, 199, 210, 234, 273, 315, 338, 390, 398, 455, 507, 546, 585, 597, 630, 819, 845, 910, 995, 1014, 1170, 1183, 1194, 1365, 1393, 1521, 1638, 1690, 1791, 1990, 2366, 2535, 2587, 2730, 2786, 2985, 3042, 3549, 3582, 4095, 4179, 5070, 5174, 5915, 5970, 6965, 7098, 7605, 7761, 8190, 8358, 8955, 10647, 11830, 12537, 12935, 13930, 15210, 15522, 17745, 17910, 18109, 20895, 21294, 23283, 25074, 25870, 33631, 35490, 36218, 38805, 41790, 46566, 53235, 54327, 62685, 67262, 77610, 90545, 100893, 106470, 108654, 116415, 125370, 162981, 168155, 181090, 201786, 232830, 235417, 271635, 302679, 325962, 336310, 470834, 504465, 543270, 605358, 706251, 814905, 1008930, 1177085, 1412502, 1513395, 1629810, 2118753, 2354170, 3026790, 3531255, 4237506, 7062510, 10593765, 21187530]

約数ペア:

[(1, 21187530), (2, 10593765), (3, 7062510), (5, 4237506), (6, 3531255), (7, 3026790), (9, 2354170), (10, 2118753), (13, 1629810), (14, 1513395), (15, 1412502), (18, 1177085), (21, 1008930), (26, 814905), (30, 706251), (35, 605358), (39, 543270), (42, 504465), (45, 470834), (63, 336310), (65, 325962), (70, 302679), (78, 271635), (90, 235417), (91, 232830), (105, 201786), (117, 181090), (126, 168155), (130, 162981), (169, 125370), (182, 116415), (195, 108654), (199, 106470), (210, 100893), (234, 90545), (273, 77610), (315, 67262), (338, 62685), (390, 54327), (398, 53235), (455, 46566), (507, 41790), (546, 38805), (585, 36218), (597, 35490), (630, 33631), (819, 25870), (845, 25074), (910, 23283), (995, 21294), (1014, 20895), (1170, 18109), (1183, 17910), (1194, 17745), (1365, 15522), (1393, 15210), (1521, 13930), (1638, 12935), (1690, 12537), (1791, 11830), (1990, 10647), (2366, 8955), (2535, 8358), (2587, 8190), (2730, 7761), (2786, 7605), (2985, 7098), (3042, 6965), (3549, 5970), (3582, 5915), (4095, 5174), (4179, 5070)]