18704140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1$

素因数の和:311

約数の個数: 96

約数和(自身を含む): 49674240

約数和(自身を除く): 30970100

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 43, 52, 65, 70, 86, 91, 130, 140, 172, 182, 215, 239, 260, 301, 364, 430, 455, 478, 559, 602, 860, 910, 956, 1118, 1195, 1204, 1505, 1673, 1820, 2236, 2390, 2795, 3010, 3107, 3346, 3913, 4780, 5590, 6020, 6214, 6692, 7826, 8365, 10277, 11180, 12428, 15535, 15652, 16730, 19565, 20554, 21749, 31070, 33460, 39130, 41108, 43498, 51385, 62140, 71939, 78260, 86996, 102770, 108745, 133601, 143878, 205540, 217490, 267202, 287756, 359695, 434980, 534404, 668005, 719390, 935207, 1336010, 1438780, 1870414, 2672020, 3740828, 4676035, 9352070, 18704140]

約数ペア:

[(1, 18704140), (2, 9352070), (4, 4676035), (5, 3740828), (7, 2672020), (10, 1870414), (13, 1438780), (14, 1336010), (20, 935207), (26, 719390), (28, 668005), (35, 534404), (43, 434980), (52, 359695), (65, 287756), (70, 267202), (86, 217490), (91, 205540), (130, 143878), (140, 133601), (172, 108745), (182, 102770), (215, 86996), (239, 78260), (260, 71939), (301, 62140), (364, 51385), (430, 43498), (455, 41108), (478, 39130), (559, 33460), (602, 31070), (860, 21749), (910, 20554), (956, 19565), (1118, 16730), (1195, 15652), (1204, 15535), (1505, 12428), (1673, 11180), (1820, 10277), (2236, 8365), (2390, 7826), (2795, 6692), (3010, 6214), (3107, 6020), (3346, 5590), (3913, 4780)]