30978780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{257}}^1$

素因数の和:324

約数の個数: 144

約数和(自身を含む): 103765536

約数和(自身を除く): 72786756

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 41, 42, 49, 60, 70, 82, 84, 98, 105, 123, 140, 147, 164, 196, 205, 210, 245, 246, 257, 287, 294, 410, 420, 490, 492, 514, 574, 588, 615, 735, 771, 820, 861, 980, 1028, 1148, 1230, 1285, 1435, 1470, 1542, 1722, 1799, 2009, 2460, 2570, 2870, 2940, 3084, 3444, 3598, 3855, 4018, 4305, 5140, 5397, 5740, 6027, 7196, 7710, 8036, 8610, 8995, 10045, 10537, 10794, 12054, 12593, 15420, 17220, 17990, 20090, 21074, 21588, 24108, 25186, 26985, 30135, 31611, 35980, 37779, 40180, 42148, 50372, 52685, 53970, 60270, 62965, 63222, 73759, 75558, 105370, 107940, 120540, 125930, 126444, 147518, 151116, 158055, 188895, 210740, 221277, 251860, 295036, 316110, 368795, 377790, 442554, 516313, 632220, 737590, 755580, 885108, 1032626, 1106385, 1475180, 1548939, 2065252, 2212770, 2581565, 3097878, 4425540, 5163130, 6195756, 7744695, 10326260, 15489390, 30978780]

約数ペア:

[(1, 30978780), (2, 15489390), (3, 10326260), (4, 7744695), (5, 6195756), (6, 5163130), (7, 4425540), (10, 3097878), (12, 2581565), (14, 2212770), (15, 2065252), (20, 1548939), (21, 1475180), (28, 1106385), (30, 1032626), (35, 885108), (41, 755580), (42, 737590), (49, 632220), (60, 516313), (70, 442554), (82, 377790), (84, 368795), (98, 316110), (105, 295036), (123, 251860), (140, 221277), (147, 210740), (164, 188895), (196, 158055), (205, 151116), (210, 147518), (245, 126444), (246, 125930), (257, 120540), (287, 107940), (294, 105370), (410, 75558), (420, 73759), (490, 63222), (492, 62965), (514, 60270), (574, 53970), (588, 52685), (615, 50372), (735, 42148), (771, 40180), (820, 37779), (861, 35980), (980, 31611), (1028, 30135), (1148, 26985), (1230, 25186), (1285, 24108), (1435, 21588), (1470, 21074), (1542, 20090), (1722, 17990), (1799, 17220), (2009, 15420), (2460, 12593), (2570, 12054), (2870, 10794), (2940, 10537), (3084, 10045), (3444, 8995), (3598, 8610), (3855, 8036), (4018, 7710), (4305, 7196), (5140, 6027), (5397, 5740)]