81504540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{571}}^1$

素因数の和:660

約数の個数: 144

約数和(自身を含む): 271086816

約数和(自身を除く): 189582276

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, 234, 244, 260, 305, 366, 390, 468, 549, 571, 585, 610, 732, 780, 793, 915, 1098, 1142, 1170, 1220, 1586, 1713, 1830, 2196, 2284, 2340, 2379, 2745, 2855, 3172, 3426, 3660, 3965, 4758, 5139, 5490, 5710, 6852, 7137, 7423, 7930, 8565, 9516, 10278, 10980, 11420, 11895, 14274, 14846, 15860, 17130, 20556, 22269, 23790, 25695, 28548, 29692, 34260, 34831, 35685, 37115, 44538, 47580, 51390, 66807, 69662, 71370, 74230, 89076, 102780, 104493, 111345, 133614, 139324, 142740, 148460, 174155, 208986, 222690, 267228, 313479, 334035, 348310, 417972, 445380, 452803, 522465, 626958, 668070, 696620, 905606, 1044930, 1253916, 1336140, 1358409, 1567395, 1811212, 2089860, 2264015, 2716818, 3134790, 4075227, 4528030, 5433636, 6269580, 6792045, 8150454, 9056060, 13584090, 16300908, 20376135, 27168180, 40752270, 81504540]

約数ペア:

[(1, 81504540), (2, 40752270), (3, 27168180), (4, 20376135), (5, 16300908), (6, 13584090), (9, 9056060), (10, 8150454), (12, 6792045), (13, 6269580), (15, 5433636), (18, 4528030), (20, 4075227), (26, 3134790), (30, 2716818), (36, 2264015), (39, 2089860), (45, 1811212), (52, 1567395), (60, 1358409), (61, 1336140), (65, 1253916), (78, 1044930), (90, 905606), (117, 696620), (122, 668070), (130, 626958), (156, 522465), (180, 452803), (183, 445380), (195, 417972), (234, 348310), (244, 334035), (260, 313479), (305, 267228), (366, 222690), (390, 208986), (468, 174155), (549, 148460), (571, 142740), (585, 139324), (610, 133614), (732, 111345), (780, 104493), (793, 102780), (915, 89076), (1098, 74230), (1142, 71370), (1170, 69662), (1220, 66807), (1586, 51390), (1713, 47580), (1830, 44538), (2196, 37115), (2284, 35685), (2340, 34831), (2379, 34260), (2745, 29692), (2855, 28548), (3172, 25695), (3426, 23790), (3660, 22269), (3965, 20556), (4758, 17130), (5139, 15860), (5490, 14846), (5710, 14274), (6852, 11895), (7137, 11420), (7423, 10980), (7930, 10278), (8565, 9516)]