17719780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1$

素因数の和:269

約数の個数: 96

約数和(自身を含む): 44876160

約数和(自身を除く): 27156380

約数列:

[1, 2, 4, 5, 10, 13, 17, 19, 20, 26, 34, 38, 52, 65, 68, 76, 85, 95, 130, 170, 190, 211, 221, 247, 260, 323, 340, 380, 422, 442, 494, 646, 844, 884, 988, 1055, 1105, 1235, 1292, 1615, 2110, 2210, 2470, 2743, 3230, 3587, 4009, 4199, 4220, 4420, 4940, 5486, 6460, 7174, 8018, 8398, 10972, 13715, 14348, 16036, 16796, 17935, 20045, 20995, 27430, 35870, 40090, 41990, 46631, 52117, 54860, 68153, 71740, 80180, 83980, 93262, 104234, 136306, 186524, 208468, 233155, 260585, 272612, 340765, 466310, 521170, 681530, 885989, 932620, 1042340, 1363060, 1771978, 3543956, 4429945, 8859890, 17719780]

約数ペア:

[(1, 17719780), (2, 8859890), (4, 4429945), (5, 3543956), (10, 1771978), (13, 1363060), (17, 1042340), (19, 932620), (20, 885989), (26, 681530), (34, 521170), (38, 466310), (52, 340765), (65, 272612), (68, 260585), (76, 233155), (85, 208468), (95, 186524), (130, 136306), (170, 104234), (190, 93262), (211, 83980), (221, 80180), (247, 71740), (260, 68153), (323, 54860), (340, 52117), (380, 46631), (422, 41990), (442, 40090), (494, 35870), (646, 27430), (844, 20995), (884, 20045), (988, 17935), (1055, 16796), (1105, 16036), (1235, 14348), (1292, 13715), (1615, 10972), (2110, 8398), (2210, 8018), (2470, 7174), (2743, 6460), (3230, 5486), (3587, 4940), (4009, 4420), (4199, 4220)]