215779980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{16273}}^1$

素因数の和:16315

約数の個数: 96

約数和(自身を含む): 688976064

約数和(自身を除く): 473196084

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 17, 20, 26, 30, 34, 39, 51, 52, 60, 65, 68, 78, 85, 102, 130, 156, 170, 195, 204, 221, 255, 260, 340, 390, 442, 510, 663, 780, 884, 1020, 1105, 1326, 2210, 2652, 3315, 4420, 6630, 13260, 16273, 32546, 48819, 65092, 81365, 97638, 162730, 195276, 211549, 244095, 276641, 325460, 423098, 488190, 553282, 634647, 829923, 846196, 976380, 1057745, 1106564, 1269294, 1383205, 1659846, 2115490, 2538588, 2766410, 3173235, 3319692, 3596333, 4149615, 4230980, 5532820, 6346470, 7192666, 8299230, 10788999, 12692940, 14385332, 16598460, 17981665, 21577998, 35963330, 43155996, 53944995, 71926660, 107889990, 215779980]

約数ペア:

[(1, 215779980), (2, 107889990), (3, 71926660), (4, 53944995), (5, 43155996), (6, 35963330), (10, 21577998), (12, 17981665), (13, 16598460), (15, 14385332), (17, 12692940), (20, 10788999), (26, 8299230), (30, 7192666), (34, 6346470), (39, 5532820), (51, 4230980), (52, 4149615), (60, 3596333), (65, 3319692), (68, 3173235), (78, 2766410), (85, 2538588), (102, 2115490), (130, 1659846), (156, 1383205), (170, 1269294), (195, 1106564), (204, 1057745), (221, 976380), (255, 846196), (260, 829923), (340, 634647), (390, 553282), (442, 488190), (510, 423098), (663, 325460), (780, 276641), (884, 244095), (1020, 211549), (1105, 195276), (1326, 162730), (2210, 97638), (2652, 81365), (3315, 65092), (4420, 48819), (6630, 32546), (13260, 16273)]